Operator`s manual

Installation and Operator’s Manual Page 44 of 62
(PVI-2000-OUTD-UK
Rev: 1.0)
6 DATA CHECK AND COMMUNICATION
6.1 RS-485 serial link
The RS-485 link uses two wires for signals plus a third wire for signal grounding,
which is different from the equipment grounding of the unit. The wires must be
run in a watertight conduit through the bottom of the unit as explained in
paragraph 3.5 after removing the watertight cap and installing a suitable watertight
conduit connector. A gasket with 2 holes is supplied together with the watertight
conduit (cable gland PG16,5) in case multiple units are connected on the same
RS485 link through a daisy chain. In case a single wire is used please stop the 2
nd
hole with the small white plug included in the kit. The wires are then run to the
RS-485 screw terminal blocks that is located in the internal compartment and is
accessible by removing the right side panel. Please refer to paragraph 3.7 for
further details on the correct procedure to remove and reposition the side panel.
RS485 connections shall be done as illustrated in Fig. 16:
¾ Signal wires must be connected to +T/R and –T/R terminals
¾ Grounding wire must be connected to the RTN terminal
Fig.16: The RS-485 serial link terminal blocks
The single AURORA has a default address is two (2) and the S1 dip switch is in
the OFF position (pushed away from the side access panel). The RS-485 address
does not have to be configured for the single AURORA inverter.